1 /* Copyright (C) 1997 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Library General Public License as 6 published by the Free Software Foundation; either version 2 of the 7 License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Library General Public License for more details. 13 14 You should have received a copy of the GNU Library General Public 15 License along with the GNU C Library; see the file COPYING.LIB. If 16 not, see <https://www.gnu.org/licenses/>. */ 17 18 #include "../include/sane/config.h" 19 20 #include <errno.h> 21 22 #ifndef HAVE_SIGPROCMASK 23 24 #define sigprocmask SOMETHINGELSE 25 #include <signal.h> 26 #undef sigprocmask 27 28 int sigprocmask(int how,int * new,int * old)29sigprocmask (int how, int *new, int *old) 30 { 31 int o, n = *new; 32 33 /* FIXME: Get this working on Windows. Probably should move to 34 * POSIX sigaction API and emulate it before emulating this one. 35 */ 36 #ifndef WIN32 37 switch (how) 38 { 39 case 1: o = sigblock (n); break; 40 case 2: o = sigsetmask (sigblock (0) & ~n); break; 41 case 3: o = sigsetmask (n); break; 42 default: 43 errno = EINVAL; 44 return -1; 45 } 46 if (old) 47 *old = o; 48 #endif 49 return 0; 50 } 51 52 #endif /* !HAVE_SIGPROCMASK */ 53